An array substrate, a method for fabricating the same, and a display device are disclosed. The array substrate comprises a plurality of sub-pixels in a display region which are defined by gate lines and data lines intersecting with each other. The array substrate further comprises a common electrode and a pixel electrode on the substrate. The common electrode comprises a plurality of first strip-shaped sub-electrodes, wherein each of the first strip-shaped sub-electrodes runs through the display region; and a common electrode line which electrically connects all of the first strip-shaped sub-electrodes.